Mask Specifications, Care, and Fit – Breathe Healthy® Microbe Shield® masks utilize the state of the art, hospital safe, non allergenic AEGIS hi-tech performance antimicrobial treatment that lasts for the life of the mask. Breathe Healthy masks have been tested by a leading lab to filter down to 1.0 micron. When adjusted to fit snugly, Breathe Healthy masks help to protect against germs, pollen, dust, pet hair & dander, allergens, mold spores, many bacteria, effluents from coughs and sneezes (containing flu viruses), and many of the particles that pollute the air (all 1.0 micron or larger). This filtration, along with the hydrophobic/hydrophilic (“moisture wick and repel”) technology allows the wearer to breathe easier while lawn mowing, gardening, grooming the family pet, leaf raking, bicycling, working in the office, during travel, carpooling, wood working… performing many of day-to-day work and recreational activities